We must decide between A and B.
我们必须在A和B之间抉择。
Through the schema, a validating parser can verify that the element InvoiceNo is a positive integer and the element ProductID consists of one letter between A and Z followed by six digits.
通过模式,验证解析器可以检查元素InvoiceNo是否是正整数,元素ProductID的首字符是否为A到Z之间的字母,后面为六个阿拉伯数字。
There's going to be a deviation because of the interactions between A and B.
这里压强将会有偏移,因为A和B的相互作用。
The first character must be a number between 1 and 9, and the next three characters must be a number between 0 and 9 or an uppercase character between A and Z (see Listing 4).
第一个字符必须是1 到9间的数字,后三个字符必须是0 到9间的数字或是A到 Z间的大写字符(参见清单4)。